Julian Schwinger had plans to write a textbook on quantum mechanics since the 1950s when he was teaching the subject at Harvard University regularly. * t Roger Newton remembers: [A] group of us (Stanley Deser, Dick Arnowitt, Chuck Zemach, Paul Martin and I forgot who else) wrote up lecture notes on his Quantum Mechanics course but he never wanted them published because he "had not yet found the perfect way to do quantum mechanics. " The only text of those days that got published eventually - following a sug gestion by, and with the help of, Robert Kohler:!: - were the notes to the lectures that Schwinger presented at Les Houches in 1955. The book was reissued in 1991, with this Special Preface by Schwinger first two chapters of this book are devoted to Quantum Kine matics. In 1985 I had the opportunity to review that development in connection with the celebration of the 100th anniversary of Hermann Weyl's birthday. [ . . . ] In presenting my lecture [4] I felt the need to alter only one thing: the notation. Lest one think this rather triv ial, recall that the ultimate abandonment, early in the 19th century, of Newton's method of fluxions in favor of the Leibnizian calculus, stemmed from the greater flexibility of the latter's notation.

Julian Schwinger was one of the most famous physicists of the 20th century and was awarded the Nobel prize for his research in quantum physics

Includes supplementary material: sn.pub/extras

Klappentext
Julian Schwinger, who shared the 1965 Nobel Prize for physics with Richard Feynman and Sin-Itiro Tomonaga for his pioneering work on quantum electrodynamics, had a considerable influence on the conceptual development of modern quantum field theory.
In addition to being an extremely productive researcher he was also a brilliant teacher, and this book demonstrates his outstanding ability to expose a difficult subject in a clear and concise style. In marked contrast to many textbooks on quantum physics, the whole of quantum kinematics and the underlying quantum action principle, which now bears his name, are derived through a systematic analysis of experimental phenomena, thus avoiding the ad hoc postulates of the axiomatic approach. Many applications, all worked out in detail, follow and culminate in an introduction to quantum electrodynamics.
A unique legacy, these lecture notes of Schwingers course held at the University of California at Los Angeles were carefully edited by his former collaborator Berthold-Georg Englert and constitute both a self-contained textbook on quantum mechanics and an indispensable source of reference on this fundamental subject by one of the foremost thinkers of twentieth century physics.

Inhalt
Prologue.- A. Fall Quarter: Quantum Kinematics.- 1 Measurement Algebra.- 2 Continuous q, p Degree of Freedom.- 3 Angular Momentum.- 4 Galilean Invariance.- B. Winter Quarter: Quantum Dynamics.- 5 Quantum Action Principle.- 6 Elementary Applications.- 7 Harmonic Oscillators.- 8 Hydrogenic Atoms.- C. Spring Quarter: Interacting Particles.- 9 Two-Particle Coulomb Problem.- 10 Identical Particles.- 11 Many-Electron Atoms.- 12 Electromagnetic Radiation.